Get-ItemSetsIndex.ps1

function Get-ItemSetsIndex
{
  <#
      .SYNOPSIS
      Retrieves the item sets index from World of Warcraft API.
   
      .DESCRIPTION
      The function fetches a list of item sets available in World of Warcraft using the API. An optional switch is available to return raw JSON data.
   
      .PARAMETER Raw
      Optional switch to return the raw JSON response from the API.
   
      .EXAMPLE
      Get-ItemSetsIndex
      Retrieves a formatted list of item sets.
   
      .EXAMPLE
      Get-ItemSetsIndex -Raw
      Retrieves the raw JSON response of the item sets index.
   
      .NOTES
      This function requires the World of Warcraft API to be accessible and valid credentials to be configured in the global variables.
   
      .LINK
      https://develop.battle.net/documentation/world-of-warcraft/game-data-apis
  #>

  
  param(
    [Parameter(Position = 0, HelpMessage = 'Return raw JSON data.')]
    [Switch]$Raw
  )

  if(Test-WoWApiConnection)
  {
    $URL = '{0}data/wow/item-set/index?namespace=static-{1}&locale={2}' -f $Global:WoWBaseURL, $Global:WoWRegion, $Global:WoWLocalization
  
    try 
    {
      $result = Invoke-RestMethod -Uri $URL -Headers $Global:WoWApiAuthHeader -TimeoutSec 5
      if($result -and $result.PSobject.Properties.name -contains 'item_sets')
      {
        if($Raw)
        {
          return $result
        }
        else
        {
          Write-Verbose -Message 'This is a formatted result. To get the native result use the -Raw parameter.'
          
          return $result |
          Select-Object -ExpandProperty item_sets |
          Sort-Object -Property id
        }
      }
    }
    catch 
    {
      $statusCode = $_.Exception.Response.StatusCode.value__
      $status = $_.Exception.Response.StatusCode
      Write-Verbose -Message ('Bad status code ({0}) {1}' -f $statusCode, $status)     
    }  
  }
}